Addition using a Chip Abacus Hundreds Tens Ones Now slide all the chips together.
Notice that there are more than 10 chips in the ones column. You will have to make a exchange of 10 chips in the Ones column for one chip in the Tens column.
257
+168

Addition using a Chip Abacus Hundreds Tens Ones Now slide all the chips together.
Notice that there are more than 10 chips in the Tens column. You will have to make a exchange of 10 chips in the Tens column for one chip in the Hundreds column.
257
+168